Occupy Oakland protesters jump the gates at a BART station in an attempt to ride free to San Franicsco on Wednesday, Oct. 26, 2011, in Oakland, Calif.

Photo: Mathew Sumner, Special To The Chronicle

Occupy Oakland protesters jump the gates at a BART station in an...

Image 2 of 3

Occupy Oakland protesters hold up a roll up door at a BART station after BART Police closed the barricade to prevent the rush of protesters from getting on the system on Wednesday, Oct. 26, 2011, in Oakland, Calif.

Photo: Mathew Sumner, Special To The Chronicle

Occupy Oakland protesters hold up a roll up door at a BART station...

Image 3 of 3

An Occupy Oakland protester shows his ticket to a BART Police Officer after officials closed the station to prevent the rush of protesters from getting on the system on Wednesday, Oct. 26, 2011, in Oakland, Calif.

(11-01) 11:48 PDT OAKLAND -- A group that has demonstrated against BART since the New Year's Day 2009 killing of Oscar Grant by a transit agency police officer abruptly canceled plans today for protesters to "occupy" two downtown Oakland stations Wednesday morning during the heart of the commute.

The group, No Justice No BART, said it was concerned that the proposed action at the 12th Street and 19th Street stations could hinder people from using BART to participate in a citywide general strike planned by Occupy Oakland protesters.

"We are disappointed to announce that this event is canceled, because misinformation about it is being spread and because we do not wish to jeopardize the energy of the general strike by discouraging the participation of anyone due to misinformation about our plans," organizers said on Facebook. "No Justice No BART will hold a BART action in the near future as a stand-alone action."

No Justice No BART took part in a series of recent protests at train stations in downtown San Francisco that led the agency to temporarily close some stations during evening commutes. The group was angry at the fatal shooting of a knife-wielding man at the Civic Center Station in San Francisco on July 3.

Grant, 22, was unarmed when he was shot to death by BART police Officer Johannes Mehserle during an attempted arrest at the Fruitvale Station in Oakland. A jury convicted Mehserle of involuntary manslaughter.